#mocking

vitest.config.ts diff showing clearMocks changing from its old false default to Vitest 5's new true default

Fix Vitest 5 clearMocks Breaking Mock State

Fix Vitest 5's clearMocks: true default wiping mock call history between tests, and decide whether to restore it or fix the test.

Aug 13, 2026Read more →

Terminal output showing Vitest's documented error: 1 call in calculator.test.ts was defined outside of the module's top level scope, pointing at a nested vi.mock call

Fix Vitest 5 vi.mock Top-Level Scope Error

Fix Vitest 5's "defined outside of the module's top level scope" error thrown by vi.mock, vi.unmock, and vi.hoisted.

Aug 13, 2026Read more →